borntobesting: Actually I find it easier to use the full grid as 26 feet.
I've heard others say that. You can see the last bit, but since it isn't framed, it's difficult. The reason I think of it as 30 is because actually I think in terms of yards on approaches not feet, and with the wind VEM, I find it gets me close enough.
I really use the blue triangle off the tee. It's a time saver.